corrigan



July 1927' F. s. CORRIGAN SINK, WASHBASIN, AND THE 111KB File d Oct. 30,1926 2 Sheets-Shut 1 INVENTUE.

' 1,6 5,311 ju-lylglgz'z' F. s. CORRIGAN. 3

- SINK; WASHBASEEN, AND THE LIKE Filed Oct. 30, 1926 2 Sheets-Sheet 2substantially at right angles the top of the sinkor b35111. Sheet metalPatented July. 12,- 1927. I I

FUNITED "STATES [PATE T I .oFJF-Ic E.

answerer: s. cesarean, or. rronomo, 021M310, CANADA, asszenon "To runsnnn'r METAL rnonuc'rs co. or canana am -ran, or ronomro, cannon.

smz, wasnnasm. Am) run Application m pctober so, 1926, Serial .No.145,286, ana'm canaaa'ootoberaa'iaae.

This invention relates to the manufacture fromsheet metal of sinks, washbasins and the like of the type which are provided with a comparativelyhigh back lying in a plane to the plane of sinks and basins haveheretofore been made of two types, the first in which the bowl and theback are separate parts bolted together l0 and the second in which thebowl and .back

are welded together. The appearance of each type is objectionable, theobjection to the first type being-that the heads of the bolts arevisibleand that a crack is left 15 between the parts, and the-objection to thesecond type that it is difiicult to make a satisfactory welded jointwithout the-joint being more or less noticeable in the finished enameledarticle.

In the second casethere is also another very serious. objection and thatis, with a back welded on in this manner, there is very little supportfrom the back for the front part of the bowl, andconse uently due to theapplication and. removal oi weight at the front part of the sink, whichoccurs in ordinary use, the latter bands at the angle, which results, inthe early cracking and chippingof the enamel along the line of weld,thus further disfiguring the sink or basin.

These disadvantages have resulted in the restriction of stamped metalconstructions to use in places where appearance is an unimportantconsideration. j

My object, therefore, in the present invention is to devise a stampedmetalconstruction which will retain the advantages of cheapness andlight weight which were characteristics 'of the earlier constructions,as compared with the well known cast iron 'sinks and wash-basins, now inuse, but which will be the equal in appearance of the cast iron article.

I'attain my object'by formingfthe'bowl andback of the sink or basin froman integral sheet of metal according to the processes hereinafterdescribedand illustrated in the on the back;-

Fi'g. ,3 a similar view after the second step of drawing;

Figs. 4 andf, asection and plan respec-- tively, illustrating the sheetwith the depres-gsion at'the finished depth; 7

Fig. 5. a sectional view 1 sheet as it appears after the drawing downllustr'ating the of its edge to form the roll on the bowl "and.

back

Figs. 6 and 6 are respectively end and plan. views-showing the sheetready for the} turning up of the back;

Figs. 7, 7 and7 are respectively sec; tlonal end and plan views afterthe turning up of the back; v 1

' Fig. 8 a sectional View showing the filling vot-the gap formed byturning up the back and the formation of the stiffening. flange Figs. 9and '9 are respectively end and plan views of thefinished sink;

Fig. 10 a section of a wash basin after the formation of the depression,the roll on the back and the apron;

Figs. 11 and 11 side and plan views respe'ctively of the basin readyfor, the turning up of the back;

up of the back; and

Fig. 13 a sectional View of the finished wash. basin. H a

In the drawings'like numerals of reference indicate corresponding partsin the ditferent figures.

l is a sheet of metal from which. the sink or wash basin is to be'formed.

In- Figs. 2 to 9 I show the various steps 1n forming-a sink. The firststep is to form the depression 2. ()wing' to the depth ofthe Fig. 12 anend elevation after the turning depression, it is found in actualpractice that sult of the second stage or' operation being shown in Fig.3, and the final stage or opera.-

tion being shown in Fig. 4;

These several steps are all portance"-as abovementioned, :as only byprogressivelydra'wingthe 'metal is it po'sslble to obtain the relativelygreat depth m shownin Fig.' 4.

of great im For the sake-0t appearance, as well as for the purpose] ofimparting stiffness and Strength to the sink, and to enable it to standup without warping during the operation of enameling, both the bowl andback are provided with an integral roll or rim 3. The sheet after theformation of the bowl is substantially of the shape shown in plan inFig. 4-, but before shaping and drawing the metal to form the roll orrim, it is preferable to trim off the sheet as shown on the dotted linein said figure so as to leave just suflicient material to form the rollor rim. The next step is the shaping and drawing of the metal to formthis roll or rim as in F ig. 5. As the back is provided with an'inwardly directed flange, the trimmed sheet will be of greater width atthis portion. The next step is the shaping and drawing of the metal toform this roll or rim as shown in Fig. 5. This may be done in one ormore stages as may be most convenient,

having in mind the characteristics of the metal employed. For a roll orrim of the type shown usually one operation will be sufficient.

The roll or rim having been formed, the next step is to notch or cutaway a portion of the metal at 4, where the bowl and back meet, the cutbeing at least substantially as long as the width of the roll or rim,the

portant as m It will be also noted from Fig. 5 thatnotch having itsgreatest width in alinement with the highest part of the roll andnarrowing olf towards each end.

As, however, the inner corners of the depression 2 are rounded, (seeparticularly Fig. 6) the notch 4 is extended inwardly as a narrow slotto the point where the {)Ollfidd corner meets the flat portion of the Aslit '5 is then cut through the side of the roll or rim as shown in Fig.6.

The cuttin of themetalat 4 is very imshortly be apparent.

the metal is drawn down dee er at the back to provide material for theange 9, hereinafter referred to, and that it merges into the shallowerfront. The next step is to bend the back to occup a position atsubstantially right angles to t e plane of the top of the bowl as shownin Figs. 7, 7- and 7 the "ends of the roll to c ose the noteSimultaneously the ends 3 of the roll on the bowl are curved upwardlyand the ends 3 of the roll on the back are curved for-'* wardly so thatthe ends meet, thus not only closing the formed by the-notch ,4, but' gaalso,'when wdlded together as hereinafter referred to, form braces whichstiffen the connection between the bowl and back. It be noted that b thecurvi of the extra material provided by mergin th roll on the back withthe rollon the W1 has at least partially disa peered, and any surplusleft s ofi tel-in the; pr0c-' ess to make the roll of substantiallyuniform depth all around the bowl.

In the bending-up operation, gaps 6 are formed as shown in F igs. 7 and7". Inserts 8 of metal are placed in these gaps and welded in positionand the ends 3 and 3 of the rolls on the bowl and back will be weldedtogether.

The edges of the rollare then trimmed,

and for the purpose of stiffening the back, the edge of its roll is bentinwardly to form a flange 9, (see Fig. 8). Any final trimming necessaryis now done. a

All rough parts are then ground smooth In Figs. 11 and 11 the basin isshown ready for the bending up of the back after having been notched at4 and slit at 5 in the same manner as the sink.

. Fig. 12 shows the back bent'up at right angles to the plane of the topof the bowl and the ends 3 and 3 bent to close the notches 4. Anyslight""drawing up of the rear corners 3 of the apron due to the up- -Ward bending of the ends 3 which may take place, is taken care of in thetrimming 7 of the apron. Owing to the depth of the rim, this drawing upof the rear corners is,

however, scarcel noticeable in any event.

Inserts are wel ded in place to'fill the gaps 7 formed by bending u theback just as in the case of the scribed. As shown in Fig. 13, the edgeof the roll sin hereinbefore deon the back is bent in to formastifiening flange 9, and also the lower edge of the apron is slightlyinturned as shown.

After the necessary grinding and cleaning the basin is then, ready forenameling.

I What I claim is':

1. A process of forming wash basins and the like whichconsists-indrawing down an integral sheet of metal in a plurality" ofoperations to form the fluid, receiving bowl, leaving at one sidesufiicien't metal to form the back; bendinglithe edges of. the

sheet downwardly to forimirollior the bowl and back; cutting theslieetat opposite sides 7 f of the roll where to rmit ofthe be bac and bowlmeetgihending the sheet to cause'the back to occup a positionv atsubstantially,

ringing the cutv of the right angles to the mainpar't oi the art cle;-

' front of the roll into juxtaposition; and

welding together the edges.

2. A process of forming sinks, wash basins and the like which consistsin drawing down an integral sheet of metal in a. plurality ofoperationsto form the fluid receiving bowl, leaving at one sidesuflicient metal to form the back; bending the edges of the sheetdownwardly to form a roll for the bowl rolls the bowl and back areconnected by a longitudinally curved brace having approximately the samecross-sectional curvature as the rolls.

3. A process of forming sinks, wash basins and the like which consistsin drawing down an integral sheet of metal in a plurality of operationsto form the fluid receiving bowl, leaving at one side suflicient metalto form the back; bending the edges of the sheet downwardly to form aroll for the bowl-and back; cutting the sheet transversely at 0ppositesides at the junction between the bowl and back to form a slit throughthe side of the roll, the roll provided with a wide notch right anglesat top and also provided with a narrow slot at the inner side of thenotch extending into the sheet; bending the sheet to cause the back tooccupy a position at substantially right angles to the main portion ofthe article bending the adjacent edges of the front of the rolls on thebowl and back in a curve to bring the front edges into juxtaposition;and welding said edges to ether whereby the rolls of the bowl and bacare connected by a longitudinally curved brace having ap-- proximatelythe same cross sectional curvature as the rolls.

4. A process of forming sinks, wash basins and the like which consistsin drawing down an integral sheet of metal in a plurality of operationsto form the fluid receiving bowl, leaving at one side sufiicient metalto form the back; bending the edges of "the sheet downwardly to form arollfor the bowl and back; cutting the sheet at opposite sides to permitof the bendin of the roll where back and bowl meet; ben ing thesh'eet tocause the back to occupy a posltion at substantially to the main part ofthe article; bringing the'cut edges of the front of the roll intojuxtaposition; welding together the edges; and bending inwardly theedges of the roll on flange. i a

Signed at Toronto, Canada, this 14th day of February, 1927. FREDERICK S.CORRIGAN.

the back to form a stiffening

